package com.atguigu.gulimall.product.service.impl;

import com.atguigu.gulimall.product.entity.*;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.SkuItemSaleAttrVo;
import com.atguigu.gulimall.product.vo.SkuItemVo;
import com.atguigu.gulimall.product.vo.SpuItemGroupAttrVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ThreadPoolExecutor;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.SkuInfoDao;
import org.springframework.util.StringUtils;


@Service("skuInfoService")
public class SkuInfoServiceImpl extends ServiceImpl<SkuInfoDao, SkuInfoEntity> implements SkuInfoService {

    @Autowired
    private SpuInfoDescService descService;

    @Autowired
    SpuInfoService spuInfoService;

    @Autowired
    SpuImagesService imagesService;

    @Autowired
    AttrGroupService attrGroupService;

    @Autowired
    SkuSaleAttrValueService saleAttrValueService;

    @Autowired
    ThreadPoolExecutor poolExecutor;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                new QueryWrapper<SkuInfoEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public void saveSkuInfo(SkuInfoEntity skuInfoEntity) {
        this.baseMapper.insert(skuInfoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SkuInfoEntity> queryWrapper = new QueryWrapper<>();
        /**
         * key:
         * catelogId: 0
         * brandId: 0
         * min: 0
         * max: 0
         */
        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            queryWrapper.and((wrapper)->{
               wrapper.eq("sku_id",key).or().like("sku_name",key);
            });
        }

        String catelogId = (String) params.get("catelogId");
        if(!StringUtils.isEmpty(catelogId)&&!"0".equalsIgnoreCase(catelogId)){

            queryWrapper.eq("catalog_id",catelogId);
        }

        String brandId = (String) params.get("brandId");
        if(!StringUtils.isEmpty(brandId)&&!"0".equalsIgnoreCase(catelogId)){
            queryWrapper.eq("brand_id",brandId);
        }

        String min = (String) params.get("min");
        if(!StringUtils.isEmpty(min)){
            queryWrapper.ge("price",min);
        }

        String max = (String) params.get("max");

        if(!StringUtils.isEmpty(max)  ){
            try{
                BigDecimal bigDecimal = new BigDecimal(max);

                if(bigDecimal.compareTo(new BigDecimal("0"))==1){
                    queryWrapper.le("price",max);
                }
            }catch (Exception e){

            }

        }


        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                queryWrapper
        );

        return new PageUtils(page);
    }

    @Override
    public List<SkuInfoEntity> getSkuBySpuId(Long spuId) {
        return this.list(new QueryWrapper<SkuInfoEntity>().eq("spu_id",spuId));
    }

    @Override
    public SkuItemVo item(Long skuId) throws ExecutionException, InterruptedException {
        SkuItemVo skuItemVo = new SkuItemVo();

        /**
         * 线程池,加异步回调执行
         */
        //先执行
        CompletableFuture<SkuInfoEntity> uCompletableFuture = CompletableFuture.supplyAsync(() -> {
            //1.基本信息
            SkuInfoEntity byId = getById(skuId);
            skuItemVo.setInfo(byId);
            return byId;
        }, poolExecutor);
        //用上一个的结果继续执行
        CompletableFuture<Void> pic = uCompletableFuture.thenAcceptAsync((result) -> {
            //2，图片信息
            List<SpuImagesEntity> images = imagesService.getImagesById(result.getSpuId());
            skuItemVo.setImages(images);
        }, poolExecutor);

        CompletableFuture<Void> sale = uCompletableFuture.thenAcceptAsync((result) -> {
            //3. spu销售组合
            List<SkuItemSaleAttrVo> saleAttrs = saleAttrValueService.getSaleAttrs(result.getSpuId());
            skuItemVo.setSaleAttr(saleAttrs);
        }, poolExecutor);

        CompletableFuture<Void> future = uCompletableFuture.thenAcceptAsync((result) -> {
            //4.spu介绍
            SpuInfoDescEntity descEntity = descService.getById(result.getSpuId());
            skuItemVo.setDescEntity(descEntity);
        }, poolExecutor);

        CompletableFuture<Void> menmber = uCompletableFuture.thenAcceptAsync((result) -> {
            //5.规格参数
            List<SpuItemGroupAttrVo> groupAttrs = attrGroupService.getAttrGroupWithAttrsBySpuId(result.getCatalogId(), result.getSpuId());
            skuItemVo.setGroupAttrs(groupAttrs);
        }, poolExecutor);

        //执行所有异步任务
        CompletableFuture.allOf(pic, sale, future, menmber).get();//阻塞一下让所有的任务执行玩;


        return skuItemVo;
    }

}